Interactive device for internet radio station

ABSTRACT

Disclosed is an interactive device for an internet radio station including a content presentation unit and a content selection unit. The content selection unit includes an operation module, a processing module, an indication module and a communication module. The operation module is used by a user to input a channel selection command by means of manual rotation and to generate a corresponding electrical signal. The processing module is used for acquiring corresponding audio resources from the network radio according to the electrical signal and issuing the corresponding audio resources to the content presentation unit which is used for playing back the audio resource. The processing module is further used for driving the indication module to generate a state change corresponding to the electrical signal. Hence, the user may select audio resources by rotating the operation module, so that the channel selection is similar to a traditional rotary tuning method.

TECHNICAL FIELD

The present disclosure relates generally to an electronic communicationtechnical field, and more particularly relates to an interactive devicefor an internet radio station.

BACKGROUND

It has been more than 100 years since the birth of the traditional radiowhich has brought great impact on human life, especially in the era whentelevision and internet have not appeared, it is the best tool forpeople to obtain information and enjoy entertainment programs. However,due to the limited transmission distance and poor sound quality (exceptFM), the traditional radio is gradually marginalized due to theinfluence of the region and listening environment in additional to theless and less content. With the rapid development of various electronictechnologies and the internet, we have entered the network era. Atpresent, there are many network radio stations on the network. Thesenetwork radio stations can provide real-time music or broadcast voiceprograms, or provide the recording and playback of the music andbroadcast, which brings great convenience to people. These radiostations are generally listened through the network radio or computerwith screen or key indication from the internet. However, as these usageinteraction manners are not as convenient as that of the traditionalradio, so many users report that the use experience is not good. Inaddition, the traditional computer is relatively large, and subject tothe network circuit, people usually can only listen at home, or use alaptop to listen, but it is still more troublesome. Moreover, becausethe computers and mobile phones are not radios themselves, there arelittle radio core components such as high-quality audio processingcomponents, power amplifiers, which can provide good user experience andhigh-quality audio effect.

We think that both traditional radio and internet radio are tools forpeople to connect with sound content. Because the internet radio hasmore content and wider crowd adaptability, the network radio hasgradually become an ideal entertainment tool for young people toaccompany their voice and emotion.

SUMMARY

The present disclosure has provided an interactive device for an interneradio station whose channel can be changed by simply rotating the knob,similar to the traditional radio, aiming at the technical problem of thecomplicated listening mode of the current internet radio station, sothat the user who is used to the traditional radio tuning manner willnot have adaption difficulty when using the interactive device for aninterne radio station provided by the present application and can acceptand freely use the interactive device for an internet radio station ofthe present application to select the audio resources.

According to an aspect, an interactive device for an internet radiostation is provided, which comprising a content presentation unit and acontent selection unit, wherein the content selection unit comprises anoperation module, a processing module electrically connected with theoperation module, an indication module of a physical shape electricallyconnected with the processing module, and a communication moduleelectrically connected with the processing module; wherein the operationmodule is configured to input, by a user, a channel selectioninstruction by means of manual rotation and generate a correspondingelectrical signal; wherein the processing module is linked to a networkradio station by the communication module, and configured to obtain,according to the electrical signal, a corresponding audio resource fromthe network radio station and release the corresponding audio resourceto the content presentation unit; the content presentation unit isconfigured to play the audio resource; wherein the processing unit isfurther configured to drive the indication module to generate a statechange corresponding to the electrical signal.

Advantageously, the operation module comprises a rotary encoder and aknob sheathed on a rotary shaft of the rotary encoder; wherein therotary encoder is arranged inside with a channel selection circuit whichis configured to generate the electrical signal corresponding to thechannel selection instruction.

Advantageously, the indication module comprises a dial provided with Nidentifiers and a light board provided with an indication circuitelectrically connected with the processing module, wherein theindication circuit comprises N light-emitting elements which arecorresponding with the N identifiers one by one, wherein N refers to anatural number greater than zero.

Advantageously, the processing module is further configured to drive thelight-emitting elements of the indication module to be switched onaccording to the electrical signal.

Advantageously, the processing module and the communication module areintegrated on an electronic circuit board, the rotary encoder and thelight board are welded on the electronic circuit board; wherein thelight board is provided with a first circular hole at its center forpassing through the rotary shaft of the rotary encoder, the dial isprovided with a second circular hole at its center for passing throughthe rotary shaft of the rotary encoder; wherein the rotary shaft of therotary encoder passes through the first circular hole and the secondcircular hole.

Advantageously, the N light-emitting elements are arranged around thefirst circular hole at regular intervals, and the N identifiers arearranged around the second circular hole at regular intervals.

Advantageously, the interactive device for an internet radio stationfurther comprises a shell and a lens, wherein the dial is clamped on theshell and the lens is clamped on the dial, Wherein the lens is providedwith a third circular hole at its center for passing through the rotaryshaft of the rotary encoder, and the rotary shaft of the rotary encoderpasses through the third circular hole.

Advantageously, the operation module comprises a rotary encoder and aknob physically connected with a rotary shaft of the rotary encoderthrough a contact module; wherein the rotary encoder is arranged insidewith a channel selection circuit which is configured to generate theelectrical signal corresponding to the channel selection instruction;when the knob is rotated by the user to input the channel selectioninstruction, the knob is configured to bring the rotary shaft of therotary encoder to rotate through the contact module, such that therotary encoder is configured to generate the electrical signalcorresponding to the channel selection instruction.

Advantageously, the indication module comprises a pull wire, a pointerconnected with the pull wire, a dial arranged along the pull wire and alight board corresponding to the dial; wherein the dial is provided withN identifiers which are corresponding with a plurality of differentaudio resources one by one, the light board is provided with anindication circuit electrically connected with the processing module,wherein the indication circuit comprises N light-emitting elements whichare corresponding with the N identifiers one by one, wherein N refers toa natural number greater than zero;

wherein the contact module comprises a first pull wire wheel, whereinthe first pull wire wheel and the knob are winded by the pull wire,respectively;

wherein when the knob is rotated by the user to input the channelselection instruction, the knob is configured to drive the pull wire towalk a certain track, so that the first pull wire wheel is configured tobring the rotary shaft of the rotary encoder to rotate correspondinglyfor generating the electrical signal corresponding to the channelselection instruction; wherein the processing module is configured toobtain, according to the electrical signal, a corresponding audioresource from the network radio station and release the correspondingaudio resource to the content presentation unit; the contentpresentation unit is configured to play the audio resource; theprocessing module is further configured to drive the light-emittingelements to be switched on according to the electrical signal, and thepointer is configured to move along the dial with the pull wire andalign with the light-emitting elements which is switched on.

Advantageously, the indication module comprises a pull wire, a pointerconnected with the pull wire, a dial arranged along the pull wire and alight board corresponding to the dial; wherein the dial is provided withN identifiers which are corresponding with a plurality of differentaudio resources one by one, the light board is provided with anindication circuit electrically connected with the processing module,wherein the indication circuit comprises N light-emitting elements whichare corresponding with the N identifiers one by one, wherein N refers toa natural number greater than zero;

wherein the contact module comprises a second pull wire wheel connectingwith the rotary shaft of the rotary encoder, a first passivetransmission wheel and a second passive transmission wheel; wherein thesecond pull wire wheel, the first passive transmission wheel, the secondpassive transmission wheel and the knob are winded by the pull wiresimultaneously;

wherein when the knob is rotated by the user to input the channelselection instruction, the knob is configured to drive the pull wire towalk a certain track, so that the second pull wire wheel is configuredto bring the rotary shaft of the rotary encoder to rotatecorrespondingly for generating the electrical signal corresponding tothe channel selection instruction; wherein the processing module isconfigured to obtain, according to the electrical signal, acorresponding audio resource from the network radio station and releasethe corresponding audio resource to the content presentation unit; thecontent presentation unit is configured to play the audio resource; theprocessing module is further configured to drive the light-emittingelements to be switched on according to the electrical signal, and thepointer is configured to move along the dial with the pull wire andalign with the light-emitting elements which is switched on.

The implementation of the interactive device for an internet radiostation provided by the present application can achieve the followingbeneficial effects. The interactive device for an internet radio stationcomprises a content presentation unit and a content selection unit,wherein the content selection unit comprises an operation module, aprocessing module electrically connected with the operation module, anindication module of a physical shape electrically connected with theprocessing module, and a communication module electrically connectedwith the processing module; wherein the operation module is configuredto input, by a user, a channel selection instruction by means of manualrotation and generate a corresponding electrical signal; wherein theprocessing module is linked to a network radio station by thecommunication module, and configured to obtain, according to theelectrical signal, a corresponding audio resource from the network radiostation and release the corresponding audio resource to the contentpresentation unit; the content presentation unit is configured to playthe audio resource; wherein the processing unit is further configured todrive the indication module to generate a state change corresponding tothe electrical signal. In such a way, the user can select audioresources by rotating the knob. This operation manner is similar to therotary tuning manner of the traditional radio, so that the user who isused to the traditional radio tuning manner will not have adaptiondifficulty when using the interactive device for an internet radiostation provided by the present application and can accept and freelyuse the interactive device for an internet radio station of the presentapplication to select the audio resources.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block schematic diagram of the content selection unitaccording to the first embodiment of the present application.

FIG. 2 is a stereoscopic decomposition diagram of the content selectionunit according to the first embodiment of the present application.

FIG. 3 is a circuit structure diagram of the channel selection circuitaccording to the first embodiment of the present application.

FIG. 4 is a circuit structure diagram of the processing module accordingto the first embodiment of the present application.

FIG. 5 is a circuit structure diagram of the indication circuitaccording to the first embodiment of the present application.

FIG. 6 is a connection diagram between the rotary shaft of the rotaryencoder, the knob and the contact module according to the secondembodiment of the present application.

FIG. 7 is a connection diagram between the rotary shaft of the rotaryencoder, the knob and the contact module according to the thirdembodiment of the present application.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

To make the object, the technical solution, and the advantage of thepresent application more clearly, the present application is furtherdescribed in detail below with reference to the accompanyingembodiments. It should be understood that the specific embodimentsdescribed herein are just a part of rather than all the embodiments ofthe present application. All other embodiments obtained by one skilledin the art without inventive works based on the embodiment of thepresent application, fall into the protection scope of the presentapplication.

Embodiment 1

The interactive device for an internet radio station provided by thepresent embodiment comprises a shell, a content presentation unit and acontent selection unit.

The content presentation unit may be one or more loudspeakers mounted onthe shell and exposed to the outside.

As shown in FIG. 1, the content selection unit comprises an operationmodule 1, a processing module 6 electrically connected with theoperation module 1, an indication module 2 of a physical shapeelectrically connected with the processing module 6, and a communicationmodule 7 electrically connected with the processing module 6. Theprocessing module 6 is connected to the network radio station throughthe communication module 7.

As shown in FIG. 2, an electronic circuit board 5 is fixed inside theshell. The processing module 6, the channel selection module and thecommunication module 7 are integrated on the electronic circuit board 5.The circuit structure of the processing module 6 is shown in FIG. 4. Thecommunication module 7 adopts the Wi-Fi chips.

As shown in FIG. 2, the operation module 1 comprises a rotary encoder 12and a knob 11 sheathed on a rotary shaft 121 of the rotary encode 12.The rotary encoder 12 is welded on the electronic circuit board 5. Therotary encoder 12 is arranged inside with a channel selection circuitwhich is configured to convert the angular displacement of the rotaryshaft 211 into the corresponding electrical signal. In this embodiment,FIG. 3 is a circuit structure diagram of the channel selection circuit.

As shown in FIG. 2, the indication module 2 comprises a dial 22 providedwith 1˜N identifiers (N refers to a natural number greater than zero)and a light board 21 provided with an indication circuit electricallyconnected with the processing module 6. FIG. 5 is a circuit structurediagram of the indication circuit. The indication circuit comprises 1˜Nlight-emitting elements which are corresponding with the 1˜N identifiersone by one. The light board 21 is welded on the electronic circuit board5. The light board 21 is provided with a first circular hole 212 at itscenter for passing through the rotary shaft 121 of the rotary encoder12. The dial 22 is provided with a second circular hole 221 at itscenter for passing through the rotary shaft 121 of the rotary encoder12. The rotary shaft 121 of the rotary encoder 12 passes through thefirst circular hole 212 and the second circular hole 221. Theidentifiers are numbers 1˜N, wherein N refers to a natural numbergreater than zero. The 1˜N identifiers are arranged around the secondcircular hole 221 at regular intervals. The 1˜N LEDs are arranged on thesurface of the light board 21 facing the dial 22, and meanwhile, the 1˜NLEDs are arranged around the first circular hole 212 at regularintervals. The 1˜N LEDs are LED1˜LEDN, wherein N refers to a naturalnumber greater than zero. The 1˜N LEDs are corresponding to the 1˜Nidentifiers one by one.

When the user manually rotates the knob 11 for a certain angle, the knob11 brings the rotary shaft 121 of the rotary encoder 12 to rotate thesame angle, so that the channel selection circuit in the rotary encoder12 converts the angular displacement of the rotary shaft 121 into thecorresponding electrical signal. The processing module 6 is linked tothe network radio station through the communication module 7 in advance.When the processing module 6 receives the electrical signal, it obtainsthe audio resource corresponding to the electrical signal from thenetwork radio station, and sends the audio resource to the contentpresentation unit. The content presentation unit receives and plays theaudio resource. In such a way, the desired audio resource can beselected and listened by using the rotary tuning manner of the analogtraditional radio.

On the other hand, when the processing module 6 receives the electricalsignals, it further drives the LED in the indication module 2 to lightup according to the electrical signal. Such that the user can clearlyknow what kind of audio resource can be listened when the LEDcorresponding to a certain identifier lights up. Then, the next timewhen the user wants to listen to the same kind of audio resource, theuser only needs to turn the knob 11 to light up the corresponding LED.For example, when the LED corresponding to the identifier “1” lights up,the content presentation unit plays the audio resources of the militarytheme, then when the user wants to listen to the audio resources of themilitary theme next time, he/she just need to turn the knob 11 to lightup the LED corresponding to the identifier “1”.

In conclusion, the implementation of the interactive device for theinternet radio station provided by the present application can achieveat least the following beneficial effects.

1. When the interactive device for an internet radio station is used tolisten to the network radio station, we can select the desired audioresources by rotating the knob 11. This selection manner is similar tothe rotary tuning manner of the traditional radio, so that the user whois used to the traditional radio tuning manner will not have adaptiondifficulty when using the interactive device for an internet radiostation provided by the present application and can accept and freelyuse the interactive device for an Internet radio station of the presentapplication to select the audio resources.

2. During the listening of the network radio station by the interactivedevice for an (Internet radio station, when the user have listened tothe radio resource from a certain network radio station, thecorresponding LED lights up, and each LED has a corresponding identifierfor facilitating the user to remember the audio resources correspondingto each LED. In such way, it will be convenient for the user to selectthe desired audio resource, thus saving the troublesome search.

Furthermore, the interactive device for an internet radio stationfurther comprises a lens 3. The dial 22 is clamped on the shell and thelens 3 is clamped on the side of the dial 22 away from the light board21. The lens 3 is provided with a third circular hole 32 at its centerfor passing through the rotary shaft 121 of the rotary encoder 12, andthe rotary shaft 121 of the rotary encoder 12 passes through the thirdcircular hole 31. The lens 3 can protect the dial 22 on one hand, andalso can facilitate the user to observe the identifier on the dial 22and the LED on the light board 21 on the other hand.

In additional, the interactive device for an Internet radio stationfurther comprises metal ring 4 buckled on the edge of the lens 3 andsurrounding the lens 3, which not only protects the lens 3, but alsomakes the interactive device for an internet radio station morebeautiful.

Embodiment 2

The difference between the interactive device for an internet radiostation provided by the embodiment and that in the embodiment 1 lies inthat the knob 11 is physically connected with the rotary shaft 121 ofthe rotary encode 12 through the contact module 6. In addition, thestructure of the indication module 5 is also different.

Referring to FIG. 6, the indication module 2 comprises a pull wire 23, apointer 24 connected with the pull wire 23, a dial 22 arranged along thepull wire 23 and a light board 21 corresponding to the dial 22. The dial22 is provided with N (N refers to a natural number greater than zero)identifiers. The light board 21 provided with an indication circuitelectrically connected with the processing module 6. FIG. 5 is a circuitstructure diagram of the indication circuit which comprises N LEDscorresponding with the N identifiers one by one. The dial 22 is fixed onthe outer side of the shell by screws and is located at the inner sideof the pointer 24. In this embodiment, the front side of the shell isprovided with a narrow through-hole which is located corresponding tothe pull wire 23. The dial 22 is arranged along the upper or lower edgeof the through-hole. The N identifiers comprises number “1”, “2”, “3”,“4”, “5”, “6”, “7”, “8”, “9”, . . . and “N”. The N identifiers arearranged along the upper or lower edge of the through-hole. The lightboard 21 is welded on the electronic circuit board 5. The N LEDs arearranged on the surface of the light board 21 facing the dial 22. The NLEDs on the light board 21 are arranged along the through-hole andexposed from the shell through the through-hole for the user'sobservation. The N LED lights are LED1, LED2, LED3, LED4, LED5, LED6,LED7, LED8, LED9, . . . , LEDN. The N LED lights are aligned with the Nidentifier one by one.

The contact module 8 comprises a first pull wire wheel 81 sheathed onthe rotary shaft 121 of the rotary encode 12. The first pull wire wheel81 and the knob 11 are winded by the pull wire 23, respectively.

When the knob 11 is rotated by the user for a certain angle, the knob 11is configured to drive the pull wire 23 to walk a certain track, so thatthe first pull wire wheel 81 is configured to bring the rotary shaft 121of the rotary encoder 12 to rotate correspondingly for a certain angle,then the channel selection circuit in the rotary encoder 12 converts theangular displacement of the rotary shaft 211 into the correspondingelectrical signal. The processing module 6 is linked to the networkradio station through the communication module 7 in advance. When theprocessing module 6 receives the electrical signal, it obtains the audioresource corresponding to the electrical signal from the network radiostation, and sends the audio resource to the content presentation unit.The content presentation unit receives and plays the audio resource. Insuch a way, the desired audio resource can be selected and listened byusing the rotary tuning manner of the analog traditional radio.

On the other hand, when the processing module 6 receives the electricalsignals, it further drives the LED in the indication module 2 to lightup according to the electrical signal. Meanwhile, the pointer 24 is alsoconfigured to move along the dial with the pull wire 23 and align withthe identifier corresponding to LED which is switched on. Such that theuser can clearly know what kind of audio resource can be listened whenthe LED corresponding to a certain identifier lights up. Then, the nexttime when the user wants to listen to the same kind of audio resource,the user only needs to turn the knob 11 to light up the correspondingLED. For example, when the LED corresponding to the identifier “2”lights up, the content presentation unit plays the audio resources ofthe sociology theme, then when the user wants to listen to the audioresources of the sociology theme next time, he/she just need to turn theknob 11 to light up the LED corresponding to the identifier “2”.

Obviously, the interactive device for an interne radio station providedby the implementation of the present embodiment can achieve the sameeffect as that of the embodiment 1.

Embodiment 3

The difference between the interactive device for an interne radiostation provided by the embodiment and that in the embodiment 2 lies inthat the contact module 8 is different.

As shown in FIG. 7, in the present embodiment, the contact module 8comprises a second pull wire wheel 82 connecting with the rotary shaft121 of the rotary encoder 12, a first passive transmission wheel 83 anda second passive transmission wheel 84. The second pull wire wheel 82,the first passive transmission wheel 83, the second passive transmissionwheel 84 and the knob 11 are winded by the pull wire 23, simultaneously.The dial 22 is fixed on the outer side of the shell by screws and islocated on the inner side of the pointer 24.

Obviously, when the knob 11 is rotated by the user to input the channelselection instruction, the knob 11 will drive the pull wire 23 to walk acertain track. In such a way, the pull wire 23 will rotate the secondpull wire wheel 82 for a certain angle. When the second pull wire wheel82 rotates, the rotary shaft 121 of the rotary encoder 12 is brought bythe second pull wire wheel 82 to rotate correspondingly for generatingthe electrical signal corresponding to the channel selection instructionby the channel selection circuit of the rotary encoder 12. Meanwhile,the pointer 24 moves a certain distance along the dial 22 with the pullwire 23 align with the identifier corresponding to LED which is switchedon.

It should be noted that the pull wire 23 can be horizontal or vertical,and correspondingly, the pointer 24 can be vertical or horizontal.

The foregoing is a further detailed description of the presentapplication in connection with specific preferred embodiments, andcannot be considered as that the specific implementation of the presentapplication is limited to these illustrations. It will be apparent tothose skilled in the art that any various modifications or substitutionsmay be made to the present application without departing from the spiritof the invention, and such modifications or substitutions should beconsidered as falling within the scope of the present application.

The invention claimed is:
 1. An interactive device for an internet radiostation comprising a content presentation unit and a content selectionunit, wherein the content selection unit comprises an operation module,a processing module electrically connected with the operation module, anindication module of a physical shape electrically connected with theprocessing module, and a communication module electrically connectedwith the processing module; wherein the operation module is configuredto input, by a user, a channel selection instruction by means of manualrotation and generate a corresponding electrical signal; wherein theprocessing module is linked to a network radio station by thecommunication module, and configured to obtain, according to theelectrical signal, a corresponding audio resource from the network radiostation and release the corresponding audio resource to the contentpresentation unit; the content presentation unit is configured to playthe audio resource; wherein the processing unit is further configured todrive the indication module to generate a state change corresponding tothe electrical signal wherein the operation module comprises a rotaryencoder and a knob physically connected with a rotary shaft of therotary encoder through a contact module; wherein the rotary encoder isarranged inside with a channel selection circuit which is configured togenerate the electrical signal corresponding to the channel selectioninstruction; when the knob is rotated by the user to input the channelselection instruction, the knob is configured to bring the rotary shaftof the rotary encoder to rotate through the contact module, such thatthe rotary encoder is configured to generate the electrical signalcorresponding to the channel selection instruction; wherein theindication module comprises a pull wire, a pointer connected with thepull wire, a dial arranged along the pull wire and a light boardcorresponding to the dial; wherein the dial is provided with Nidentifiers which are corresponding with a plurality of different audioresources one by one, the light board is provided with an indicationcircuit electrically connected with the processing module, wherein theindication circuit comprises N light-emitting elements which arecorresponding with the N identifiers one by one, wherein N refers to anatural number greater than zero; wherein the contact module comprises afirst pull wire wheel, wherein the first pull wire wheel and the knobare winded by the pull wire, respectively; wherein when the knob isrotated by the user to input the channel selection instruction, the knobis configured to drive the pull wire to walk a certain track, so thatthe first pull wire wheel is configured to bring the rotary shaft of therotary encoder to rotate correspondingly for generating the electricalsignal corresponding to the channel selection instruction; wherein theprocessing module is configured to obtain, according to the electricalsignal, a corresponding audio resource from the network radio stationand release the corresponding audio resource to the content presentationunit the content presentation unit is configured to play the audioresource; the processing module is further configured to drive thelight-emitting elements to be switched on according to the electricalsignal, and the pointer is configured to move along the dial with thepull wire and align with the light-emitting elements which is switchedon.
 2. An interactive device for an internet radio station comprising acontent presentation unit and a content selection unit, wherein thecontent selection unit comprises an operation module, a processingmodule electrically connected with the operation module, an indicationmodule of a physical shape electrically connected with the processingmodule, and a communication module electrically connected with theprocessing module; wherein the operation module is configured to input,by a user, a channel selection instruction by means of manual rotationand generate a corresponding electrical signal; wherein the processingmodule is linked to a network radio station by the communication module,and configured to obtain, according to the electrical signal, acorresponding audio resource from the network radio station and releasethe corresponding audio resource to the content presentation unit; thecontent presentation unit is configured to play the audio resource;wherein the processing unit is further configured to drive theindication module to generate a state change corresponding to theelectrical signal; wherein the operation module comprises a rotaryencoder and a knob physically connected with a rotary shaft of therotary encoder through a contact module; wherein the rotary encoder isarranged inside with a channel selection circuit which is configured togenerate the electrical signal corresponding to the channel selectioninstruction; when the knob is rotated by the user to input the channelselection instruction, the knob is configured to bring the rotary shaftof the rotary encoder to rotate through the contact module, such thatthe rotary encoder is configured to generate the electrical signalcorresponding to the channel selection instruction; wherein theindication module comprises a pull wire, a pointer connected with thepull wire, a dial arranged along the pull wire and a light boardcorresponding to the dial; wherein the dial is provided with Nidentifiers which are corresponding with a plurality of different audioresources one by one, the light board is provided with an indicationcircuit electrically connected with the processing module, wherein theindication circuit comprises N light-emitting elements which arecorresponding with the N identifiers one by one, wherein N refers to anatural number greater than zero; wherein the contact module comprises asecond pull wire wheel connecting with the rotary shaft of the rotaryencoder, a first passive transmission wheel and a second passivetransmission wheel; wherein the second pull wire wheel, the firstpassive transmission wheel, the second passive transmission wheel andthe knob are winded by the pull wire simultaneously; wherein when theknob is rotated by the user to input the channel selection instruction,the knob is configured to drive the pull wire to walk a certain track,so that the second pull wire wheel is configured to bring the rotaryshaft of the rotary encoder to rotate correspondingly for generating theelectrical signal corresponding to the channel selection instruction;wherein the processing module is configured to obtain, according to theelectrical signal, a corresponding audio resource from the network radiostation and release the corresponding audio resource to the contentpresentation unit; the content presentation unit is configured to playthe audio resource; the processing module is further configured to drivethe light-emitting elements to be switched on according to theelectrical signal, and the pointer is configured to move along the dialwith the pull wire and align with the light-emitting elements which isswitched on.